[PATCH 12/16] drm/i915: Add vblank irq tracepoint

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c   | 21 ++++++++++++++-------
 drivers/gpu/drm/i915/i915_trace.h | 20 ++++++++++++++++++++
 2 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index ae7228032d2c..bb80cc319567 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1686,6 +1686,13 @@ void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
 		DRM_DEBUG("Command parser error, pm_iir 0x%08x\n", pm_iir);
 }
 
+static void intel_handle_vblank(struct drm_i915_private *dev_priv,
+				enum pipe pipe)
+{
+	trace_intel_pipe_vblank(dev_priv, pipe);
+	drm_handle_vblank(&dev_priv->drm, pipe);
+}
+
 static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
 {
 	enum pipe pipe;
@@ -1772,7 +1779,7 @@ static void i8xx_pipestat_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
 			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
@@ -1790,7 +1797,7 @@ static void i915_pipestat_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
 			blc_event = true;
@@ -1814,7 +1821,7 @@ static void i965_pipestat_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
 			blc_event = true;
@@ -1840,7 +1847,7 @@ static void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
 			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
@@ -2369,7 +2376,7 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (de_iir & DE_PIPE_VBLANK(pipe))
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe))
 			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
@@ -2422,7 +2429,7 @@ static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		if (de_iir & (DE_PIPE_VBLANK_IVB(pipe)))
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 	}
 
 	/* check event from PCH */
@@ -2721,7 +2728,7 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 		I915_WRITE(GEN8_DE_PIPE_IIR(pipe), iir);
 
 		if (iir & GEN8_PIPE_VBLANK)
-			drm_handle_vblank(&dev_priv->drm, pipe);
+			intel_handle_vblank(dev_priv, pipe);
 
 		if (iir & GEN8_PIPE_CDCLK_CRC_DONE)
 			hsw_pipe_crc_irq_handler(dev_priv, pipe);
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 3b326bcc1608..61f72c4e5468 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -20,6 +20,26 @@
 
 /* watermark/fifo updates */
 
+TRACE_EVENT(intel_pipe_vblank,
+	    TP_PROTO(struct drm_i915_private *dev_priv, enum pipe pipe),
+	    TP_ARGS(dev_priv, pipe),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
+			   __entry->pipe = pipe;
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, scanline %u",
+		      pipe_name(__entry->pipe),
+		      __entry->scanline)
+);
+
 TRACE_EVENT(intel_load_luts_start,
 	    TP_PROTO(struct intel_crtc *crtc),
 	    TP_ARGS(crtc),
-- 
2.21.0